Catalytic system for the reduction of nitrogen oxides
July 7, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 4091007 Conversion of nitrogen oxides Zeolitized composite bodies and manufacture thereof Octane enhancement and total liquid product yield improvements in catalytic cracking using in-situ crystallized ZSM-5 clay aggregates Abatement of NOx in exhaust gases Method of crystallizing a zeolite on the surface of a monolithic ceramic substrate Catalytic reduction of nitrogen oxides Ferrisilicate molecular sieve and use as a catalyst Method for reduction of nitrogen oxides with ammonia using promoted zeolite catalysts Staged metal-promoted zeolite catalysts and method for catalytic reduction of nitrogen oxides using the same InventorsAssigneeApplicationNo. 271686 filed on 07/07/1994US Classes:423/239.2ZeoliteExaminersPrimary: Lewis, MichaelAssistant: Dunn, Thomas G. Jr. Attorney, Agent or FirmInternational ClassB01J 008/00AbstractThere is presented a specially prepared catalyst and a process for the treatment of exhaust gas with that catalyst, which is useful for the selective catalytic reduction of NOx contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NOx over a catalyst composition comprising a metal and an in-situ crystallized zeolite, ZSM-5. The catalyst of this invention may be formed into a desired shape, e.g., by extrusion, and finished in a humidified atmosphere after forming. |
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